At my house, I don't have to do anything... The cleome comes up in the spring... Pull the extras and pot them up for sharing.
One of those so-called self sowing annuals....
Poppies are another one that self sows.
And.... In the deep south, you don't want to plant morning glories, because they are impossible to get rid of once you have them... Which wouldn't be a bad thing.. If you could grow anything else....
